Southeastern Sustainability Center

AdditionBy: Andrew LeBlanc

ET-494

Fall 2013-Spring 2014

Advising by: Rudolph Rode and Byron Patterson

Objective

To design and construct a building in which has the following attributes:

24’x24’

Able to be multifunctional

Leave potential for future development

Overall vision

Self sufficient = Save $$$

Begin 10 year plan

Desires in Building:

Pellet Mill functional

Solar panels

OHD door

Eye wash station

Fire sprinkler system

Basic parts

Rigid frame column and rafter- main structural system

Girts and Purlins- secondary structural members

Posts- supports structural members

Jambs- doors, windows

X-Bracing- the lateral load on a building is reduced by transferring the load into the exterior columns.

Basic Connections

Roof purlins- butt joint

Roof purlins and sidewall girts- prepunched holes

Columns- anchor bolts

Door jambs- open C channel and C sections

Flush and Bypass

Flush girts provide no air space between the columns and exterior panels yet offer the maximum amount of floor space.

The Bypass girt makes a continuous run around the outside of a building’s columns, providing an air space the width of the girt between the column and exterior panels.

Accomplishments (Fall 2013) Research of metal structures

Osha specifications and regulations

Floor plan

Electrical plan

Foundation plan

Sewage plan

Plumbing plan

Elevations

Plans

Floor plan

Location of columns, openings

X-bracing

Plans

Elevations

Openings

Heights

Overall look of building

Accomplishments Spring 2014

Eave strut details

Sheeting details

Wall details

Roof framing

Roof details

Connection details

Calculations

Gather materials list

Estimate

Microsoft Project schedule of tasks

Constructed mini model

Plans

Purlin plan

Shows column location

Offset of purlins

Plans

Eave details

Tapered column connection

Siding, trim and roofing connections

insulation

Plans

Anchor rod connections

Where to place bolts in concrete

Connect to columns

Calculations- Types of loads

D = Dead load

L = Live load

LR = Roof live load

S = Snow load

R = Rain load

W = Wind Load

E = Earthquake load

LRFD Load Combinations:

Gives the overall compression or tension in members in steel buildings:

1.4D

1.2D + 1.6L + 0.5(Lr or S or R)

1.2D + 1.6 (Lr or S or R) + (0.5L or 0.8W)

1.2D + 1.6W + 0.5L + 0.5 (Lr or S or R)

1.2D + 1.0E + 0.5L +0.2S

0.9D + (1.6W or 1.0E)

LRFD (Load & Resistance Factor Design)

LRFD Load Combinations for Southeasten’s Sustainability Center Addition, given: D = 30kips, L = 30kips, W = 12.5 kips

1. 1.4D = 1.4(30k) = 42k

2. 1.2D + 1.6L + 0.5(Lr or S or R) = 1.2(30k) + 1.6(30k) + 0 = 84k

3. 1.2D + 1.6 (Lr or S or R) + (0.5L or 0.8W)

= 1.2(30k) + 0 + 0.5(30k) = 51k

= 1.2(30k) + 0 + 0.8(12.5k) = 46k

4. 1.2D + 1.6W + 0.5L + 0.5 (Lr or S or R)

= 1.2(30k) + 1.6(12.5k) + 0.5(30) + 0 = 71k

5. 1.2D + 1.0E + 0.5L +0.2S = 1.2(30k) + 0 + 0.5(30) + 0 = 51k

6. 0.9D + (1.6W or 1.0E) = 0.9(30k) + 1.6(12.5k) = 47k

In which I found to be 84k compression (+)

Buckling load

A W8 x 28 section was selected for a pinned-pinned connection as follows; with a length of 12 ft.

K=1.0, ry=1.62, Fy=50Ksi (found in AISC manual)

Slenderness ratio: KL/r= 88.89 (unitless)

Pu=4.71(E/Fy)^1/2= 113.43

If, KL/r < Pu

Then, Fcr=[0.658^(Fy/Fe)]Fy

Now, Euler’s equation: Fe=∏^2 E/ (KL/r)^2 = 36.22 ksi

Plug in, Fcr=28.06 ksi= 28,060 psi

elastic buckling-slender columns that have a large slenderness ratio and failure is before any yielding in the materials.

inelastic buckling occurs for intermediate columns that have a moderate slenderness ratio and the failure occurs by both the buckling and the materials yielding simultaneously

Codes, Specifications and Standards

Building Codes Most used single national building code: the International Building

Code (IBC)

Legal documents which protect public safety.

• Minimum design loads

• Detailed design, construction and inspection rules for structures in general

1) Building occupancy classifications

2) Building heights and areas

3) Interior finishes

4) Foundation, wall, and roof construction

5) Fire protection systems (sprinkler system requirements and design)

6) Materials used in construction

7) Means of egress

Specifications Specifications are design guidelines and

recommendations

ACI (American Concrete Institute)

3500PSI concrete is used for applications where significant loading is expected. Uses include building footings, bond beams, grade beams, and floor slabs where heavy loads may be moved or stored.

AISC (American Institute of Steel Construction)

Specification for Structural Steel Buildings

Code of Standard Practice for Structural Steel Buildings

Specifications

2500psi- walkways, driveways

3000 psi- standard

3500 psi- where surface spalling isn’t acceptable

4000 psi- heavy constant loads 2500 psi

3500 psi

4000 psi

Local codes and standards

Fire marshal and city of Hammond approval

Approves drawn plans by stamping ensuring they meet requirements such as:

NFPA 13, 13D, 13R - Sprinkler Systems

NFPA 17 - Dry Chemical Extinguishing

NFPA 10 - Fire Extinguishers

Estimate

an approximate calculation or judgment of the value, number, quantity, or extent of a job

Gives approximation of total project cost

Detailed description of materials used

Estimate

Time scheduling

MS Project 2013

Total completion time: 6 weeks

Seven laborers working 40 hours weeks

Monday-Friday, 8am-5pm

Tracks progress and gives timelines to meet

Total cost:$22,500

Construction of mini model

A 1:12 scale model was designed

Hinged roof

2 OHD doors

Matted board for siding and roofing

White felt for insulation

Parts labeled by color

References Council, International Code. "IBC 2009 Building Codes." Law.resource.org.

International Code Council, 17 Mar. 2009. Web. 17 Feb. 2014.

Delaune, Joe. “Public Safety Services memorandum.” sfm.dps.louisiana.gov. 2014. Web. April 29, 2014.

Johnson, Alford. “American Institute of Steel Construction, Inc.” www.aisc.org. 2002. Web. April 14, 2014.

Maluinu, Jamie. "How to Calculate Wind Load." wikiHow. N.p., 10 Apr. 2012. Web. 1 Feb. 2014.

Mangan Communications. “OSHA 29CFR1910.” www.osha.gov. Jun. 2013. Web. April 21. 2014.

McCormac, Jack C. and Stephen F. Csernak. Structural Steel Design Fifth Edition. New Jersey: Pearson, 2012.Text Book.

"Sprinkler Head Spacing and Location." The architect's technical resource. www.archtoolbox.com. Arch Media, 20 Dec. 2006. Web. 13 Apr. 2014.

Sunward, Jonthan. "Erection." Erection. www.scg-grp.com. 7 Mar. 2010. Web. 10 Jan. 2014.

QUESTIONS